Medical system

Abstract

A medical system including a grasp device having a longitudinal portion and an end effector attached to the longitudinal portion; an overtube having a collection lumen and a water supply lumen through which the longitudinal portion is inserted and having a distal end opening positioned inside the collection lumen; and an aspirator connected with the collection lumen, wherein the end effector further has a first member; and a second member mounted so as to open and close the end effector by moving relatively to the first member, wherein the second member forms an interior space between the first member and the second member for accommodating the tissues and has an opening communicating with the interior space when the end effector is closed, and the proximal end portion of the second member is enterable into the collection lumen.

What is claimed is: 
     
         1 . A medical system, comprising:
 a grasp device having an end effector configured to capture tissues and a longitudinal portion, the end effector being attached to a distal end of the longitudinal portion;   an overtube having a collection lumen and a water supply lumen through which the longitudinal portion is inserted, the water supply lumen having a distal end opening positioned inside the collection lumen; and   an aspirator connected with the collection lumen,   wherein the end effector further comprises:
 a first member; and 
 a second member mounted so as to open and close the end effector by moving relatively to the first member, 
 wherein the second member is configured to form an interior space between the first member and the second member for accommodating the tissues, and the second member has an opening communicating with the interior space in a proximal end portion when the end effector is closed, and 
   wherein the proximal end portion of the second member is configured to be enterable into the collection lumen.   
     
     
         2 . The medical system according to  claim 1 ,
 wherein the first member and the second member are rotatably supported by a rotary axial member,   wherein the opening communicating with the interior space when the end effector is closed is formed in the proximal end portion of the first member, and   wherein the proximal end portion of the first member is enterable into the collection lumen.   
     
     
         3 . The medical system according to  claim 1 ,
 wherein the grasp device further has a sealing member attached in the vicinity of the end effector, the sealing member being configured to seal a gap between the end effector and an inner wall of the collection lumen when the proximal end portion of the first member enters in the collection lumen.